Carsharing is a big deal in many urban centers, and it's only going to get bigger. Last fall, one study predicted that the 2.3 million users around today will grow to more than 12 million by 2020. While that's good news for cities already dealing with congestion, some are sounding the alarm that all of this shared consumption is going to hurt car sales.

According to a press release quoted in Dow Jones Newswires, Stefan Lofven, head of Swedish trade union IF Metall, the board of Saab has voted today to liquidate the company. Simultaneously, General Motors has announced that it has hired AlixPartners to supervise the "orderly wind-down" of the marque.